But there is a peace which is serenity of thought, tranquillity of mind, simplicity of heart, the bond of love, the fellowship of charity. None will be able to come to the inheritance of the Lord who do not observe this testament of peace; none be friends with Christ, who are at enmity with the Christians.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: de Verb. Dom. serm. ix